package com.API;

public class Test06 {
    public static void main(String[] args) {
        StringBuffer sb =new StringBuffer();
        sb.append(666);
        sb.append("黑马程序猿");
        sb.append("传智播客");
        sb.append("博学谷");
        System.out.println(sb);
        sb.reverse();
        System.out.println(sb);

    }
}

